Slicing machine



March 17, 1931. v w, J, CAMPBELL 1,797,045

smcme MACHINE Filed July 5, 1929 Patented Mar. 17, 1931 sierra r FFECETENT WILLIAM J. CAIVIPBELL, F INDIANAPOLIS, INDIAZTA, ASSIGNQR T0 AIEEBICAN SLICING IWAGHINE COIVIPANY, OF CHICAGO, ILLINOIS, A CORPORATIONOF,INEW YORK SLECING Ii'iACHINE Application filed July 3,

My invention relates to a slicing machine of the type in which a rotaryknife is driven, preferably by motor, at relatively high speeds. Oneobject of my invention is to provide means for protecting thetransmission and particularly the belt drive of such a knife from theaccess of grease, dirt, meat particles and the like. Other objects willappear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically in theaccompanying draw ings, wherein Figure 1 is a front elevation with partsbroken away,

Figure 2 is a section on the line 2-2 of Figure 1; and

Figure 3 is a detail.

Like parts are indicated by like symbols throughout the specificationand drawings.

Referring to the drawings, A generally indicates any suitable base uponwhich is mounted the motor A with the motor shaft A and its pulley A Bis'a rotary knife the front of which is recessed as at B and the rear asat B B is a knife shaft upon which the knife is mounted and B is apulley associated with knife and shaft. B is a driving belt passingabout the pulleys B and v The knife shaft is mounted in any suit ablebearing, for example in the sleeve portion C mounted on the frame orbase A. it includes the bearing portion proper, C and a bell shapedguard extension therefrom, C the edge of which penetrates the recess Bas shown in Figure 2. C indicates a housing partition or wall associatedwith the sleeve C, apertured as at C to permit the passage therethroughof the pulley A lhe wall C is provided with a forwardly extending flangeor wall C in proper shape to surround the drive, its general form beingindicated, for example, in Figure 1. With the wall C protecting one sideof the transmission and the wall C extending forwardly from it and theknife itself, in cooperation with the guard C protecting the pulley, Iprovide a further, and removable partition i or housing member generallyindicated as D.

1929. Serial No. 375,603.

It may be secured to the wall C, as by the screws D It is secured to thelower portion of the guard C or to an adjacent portion of the housing,as at D It will be observed that it penetrates substantially within theperiphery of the knifeand its inner edge may, if desired, be providedwith a flange or rim D approaching or entering the recess 13 Underordinary circumstances this flange or rim may be dispensed with, butunder some circumstances it may be useful. In order to provide space forthe motor shaft and the pulley A the member D may be outwardly offset asat D. W ien it is necessary to have access to the transmission, as whenit is necessary to change the belt I may remove the knife, as by removalof its securing screw C. When the knife is removed the screws D D may beloosed and the plate 1) can then be removed.

In order further to limit the access of material to the interiorof theknife housing I provide the guard plate E, the arcuate edge E of whichpenetrates the forward recess B of the knife. The knife axis is tilted,as shown in Figure 2, in order to throw the cutting edge of the knifeforwardly into the plane of the guard plate E. E is any suitablescraper, which may be mounted on the guard plate E, which engages theforward face of the knife and further reduces the tendency of material,grease and the like, to be carried into the interior of the knifehousing.

It will be realized that whereas I have de scribed and shown a practicaland operative device, nevertheless many changes might be made in thesize, shape, number and disposition of parts without departing from thespirit of my invention. I therefore wish my description and drawings tobe taken as in a broad sense illustrative and diagrammatic rather thanas limiting me to my specific showing.

The use and operation of my invention are as follows: I

In the slicing machine of the type herein shown it is advantageous toemploy a belt of rubber. In slicing fatty meats, grease or lard friesout of the cold. bacon or ham.

Similarly, in cutting other meats, for example, hot meats, the juicesare carriedabout the periphery of the knife. The rubber in the beltdeteriorates seriously if any such grease, lard or juices, reach it.This condition is particularly disastrous with rubber belts, but beltsof any material, such as leather, when such are used, are likely todeteriorate. And finally, regardless of the deterioration of the belts,and even where other driving means are employed, it is extremelydisadvantageous to have grease, lard, meat juices, fragments and scrapsof meat carried into the interior of the device. They not only interferewith the drive, but develop an unsanitary condition. In the presentknife most of the grease,lard and the like is scraped off by the scraperB so far as concerns the front of the knife. The little that remains maybe carried on the periphery of the knife into the interior of the knifhousing and to the rear of the guard plate E. It cannot reach thetransmis ion or go any farther because the partition D, which overlapsthe knife, forms a complete closure for the transmission housing formedby the walls C and C Owing to the speed of r tat-ion of the knife anysuch grease, juices and fragments if discharged from the knife, arethrown centrifugally from the knife edge. They cannot crawl back intoward the knife axis and therefore cannot penetrate the space to therear of the partition D. The partition D and wall C further preventparticles from .the sharpening elements G G when in use,

to enter the transmission.

I claim:

1. A slicing machine including a rotary knife and a motor adapted todrive the knife, a removable guard plate for the forward face of theknife, pulleys associated with knife and motor and a driving beltconnecting them and shielding means adapted to prevent the access tosaid belt of material cut by the knife,

including a removable shield element, be-

tween knife and belt, overlying the belt and the motor pulley andextending a substantial distance within the periphery of the knife andtoward its axis of rotation.

2. In a slicing machine, a motor, a rotary knife, a driving connectionbetween knife and motor, a guard plate adapted to mask the forward faceof the knife, and a removable partition member, to the rear of saidguard plate, positioned between the knife and the said drivingconnection.

3. In a slicing machine, a motor, a rotary knife, a driving connectionbetween knife and motor, a removable guard plate for the forward face ofthe knife, and a separately removable partition plate, to the rear ofsaid guard plate, intermediate the knife and the driving connection.

4, In a slicing machine, a motor, a rotary knife, a driving connectionbetween knife and motor, a removable guard plate for the forward face ofthe knife, and a separately removable partition plate, intermediate theknife and the driving connection.

5. A slicing machine including a knife and a motor adapted to actuateit, a removable guard plate for the forward face of the knife, atransmission intermediate said knife and motor, and shielding meansadapted to prevent the access to said transmission of material cut bythe knife, which includes a removable shield element positioned betweenthe knife and transmission and extending a substantial distance withinthe periphery of the knife and overlapping the face of the knife.

6. In a slicing machine which includes a knife and means for actuatingit, and a motor therefor, a transmission intermediate said knife andmotor, a housing adapted substantially to enclose said knife, saidtransmission being positioned within said housing, and interior guardmeans, within said housing, positioned between said transmission andsaid knife.

7. In a slicing machine, a motor, a rotary knife, a driving connectionbetween knife and motor, a guard plate adapted to mask the forward faceof the knife, and a removable partition member, to the rear of saidguard plate, positioned between the knife and the motor.

8. In a slicing machine which includes a rotary knife, a motor thereforand a trans mission between knife and motor, a guard plate adapted tomask the forward face of the knife and an intermediate protecting plateinterposed between the rear face of the knife and the transmission, saidintermediate plate, overlapping the face of the knife and terminatingbetween the periphery and the axis of the knife.

Signed at Indianapolis, county of Marion and State of Indiana, this 27thday of June WILLIAM J. CAMPBELL.

